Automatic sash-lock.



N. RUSK.

AUTOK 0 BABE LOOX.

unieuro Lsn JUL! a. ma.

, ,080,172, Patented Deo. 2, 1913.

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NEWTON nusx, or'sANrmcopcsmronms,*'sssIeNon or ONE-HALF T0 DAVID Specification o! Letter-#Patent Patented Dec.2, 1.913.

Application llled July 3, 1913. Serial No. 777,810.

To all whom it may concern.'

lBe it known that I, NEWTON Rusk, a citizen of the'United States, residing at San Diego, in the county of San Diego and State of California, have invented certain new and useful Improvements in Automatic Sash- I'locks, of which the following is a specification.

.The object ofthis inventionis to provide a lock to be laced ouy the meeting rails of vertically-.sliding window sashes which will automatically draw. the two sashes together `and lock them by. the operation of lowering .the previously. raised lower sash, or the. re-

verse if the u per sash was lowered.

A further o Jlctis to provide a sash fasteningdevice w ich can onlyl be unlocked to release thetwo window sas es, by ,av lateral pressure. uponl thedocking levers, and the ffurthenobject is to so construct and locate 1 said .lockingleversthat the. lock can not be `picked from the outside of .the house.

.Another-object' of my invention is to provide a window lock .having a.l smally number of parts, -all yof whichv are inex ensivel to manufacture, and which are rea ily assembled, thereby insuringlowcost of manufacture and .to provide :a lock .which will be durableand'easy to operate.

I accom lish the above and other objects which wil lbe hereinafter. fully .described and pointed out, by the mechanism illustratec in the .accompanying drawing, .in whicl -Figure 1 is aview in side elevation looking at the inside of the window, of a portion of the meetin railsof the sashesof aV window equippe with my. invention which is shown in lockedposition. Fig. 2 is a. vertical seetion of the window on the line 2-2 of Fig. 1 looking toward the sash lock. Fig. 3v isa vertical section on the line 8-8 `of Fig. 2. Fig. 4 is a to lan view of the catch member of the-loc t etached from all vother parte. Fig. 5 is an elevation of same looking in the `direction of the arrow 5 shown in Fig. 4 and Fig. 6 is a top plan view of the spring of the lock removed from the vbox orcasingin which it ishoused-in the lassembled loc Like 'characters of. reference'indicate like partethroughout..thezsevera1 :views of the adrawing..

ylever 20 locke 7 is the meetin rail of the upper sash and 8 the meetin rai of the lower sash.

9 is the bo y of the lock having horizontal ears 10 with holes for the passage of screws, as shown, by means of which the body 9 is secured to the meeting rail 7 of the up )er sash. The interior of the body 9 is holllow to form a box or casing into which the lower end of a latch 11 is extended through a lon itudinal slot 12. At the other end ci' the od 9 from the slot 12 is a standard 13, prefera ly formed as an integral portion of the body 9 and having a transverse slot 14. near. its base. This standard has the taperingrside 15, as shown in Fig. 2.

. he lower end of the latch bar 11, which is inserted through the slot 12 into the hol- .low body 9, is bent at right angles as shown .in Fig. 3 andthis bent end is pivoted to the body 9 by .means of .a transverse pin 16. Mounted within the hollow body 9 is a leaf spring17, one end of whichhas a bearing upon a transverse pin 18 supported by the body 9and vthe other end 19 which is preferably reduced -in width as shown in Fig. 6, is passed out f thehollowbody or box 9 througha suitable 'slot' in the top of the box at the baselof the standard 18, as shown in Y`Fig.`l?,` and is bent-toward 'thelatch bar 11, ,as shown, and terminates against the under side of a locking lever 20. This locking passes through a suitable slot. formed 1n he latchbar 11 and is pivotally secured `to the latch bar by a in 21. The latch bar.20 extends through t 1e slot 14. in the standard 13 and terminates with an upwardl ybent 'hook,`,22'-which is normally in contactwith.l the outer side of standard 13 b the pressure against the `under side of tie latch bar 20 of the end 19 .of-.spring 17. .The vertical dimensions of the s otr14 are suicient ,to allow the hook 22 tofbe moved down by a lowering movement of the latch bar 2O out of engagement with thestandard ltherebv releasing the latch bar 11 so as to permit the latter to bc swung in a directionaway from the` standard 18, which movement is permitted by the suitable extension-of the slotf12. The inner end of the slot 12 forms a stopto limit the movement of the' latch bar 11 in the direction of the standardl. kThe lower end of the latch barf 11 .is .in contact, with the spring 17, and

' i in' order tosecurethis contactjas'faraway as possible from =`the pin `1751 provide a -down'` ward 11i or heel extension-23 on the end of the latc i.; ban-Thus they tension fof the.

. standard whentliecatch on the other sash is lowered into contact with it.l

The catch 24, 'ust referred to, is secured by screws or ot yer suitable means to the meeting rail 8 of the lower sash. The ver tical member of this catch has a horizontal vextension which' is projected toward the latch bar 11 and extends under the shoulder of the head on said barwhen in locked position. "This horizontal member 25 is' rovided with a slot 26 for the'passage'o the standard 13v through the horizontal niember; The dimensions of the slot 26 are such as lto yfit the standardf 13 closely when` .the two meeting rails 7 fand 8 ofthe window sashes are inlocking position on a level with tlieslot readily and then,ll bythe contactof x the sloiingedge 415a instl the"'catch at ".22`1of thehorizontal'flatcli" ar 20.*and there' by unlock the"'-latch;bar11.thc horizontal 'the en of'tlie slo't 26t e rails are brought toffether to theposition shown in Fi 2. n orderto automaticall I.release t e hook the, memberon one sidelof the slot `26bent down in..U-shapeflto"form an extension 27 which' contactswith the hook 22and disy engages the latch bali-20 before the horizontal member 25 on the 'other side of theslot 26 hascome in cntact`,with the beveled sur-4 together. This isgdone manually andforthis iurpose the lever 20 is provided with the. nger-plate extension 80 on its endoppcsite the' o ok'22. To operate the `device the thumb isplaced a ainst the beveled side go'the head of the' atch bar'11` and the nger againstA the plate 80;'then a ressure fof ,tha two together'willfrst eck the lever 20; and `thatjwill*release the latch'bar bv a. continuation or; the 1 same movement.

spring 17 1 has a Vtendencyto hold tlieflatch 'a locking ar bent ortionpf member 25 thereby insuring hadoc ted". condition .of the parts. The interiorjspace of the U-shaped portion affords cleaijanceior the hooked end of the bar 20 when that -end is lowered.

While I haveI described my invention with more orgless minuteness as regards details of construction and arrangement and as being embodied in certain precise forms I do not desire @to bek limited thereto unduly or anymore than is ointed out in the claims. On the contrary, contemplate all proper changes in form, construction and arrangement,'thc omission of immaterial elements and the substitution of equivalents as circumstances may suggest or necessity render vex edient."A

claim:'

1. In a window lock, a body member attached to one Sash, a standard extending vertically from said body and having a transverse slot, a catch plate attached to the other sash having a slot through which the standard passes when the window is locked,

4a latch bar pivoted to the body and adapted to swin into lockin engagement with the catch ate, and a loc 'ng bar ivoted to the latch ar and passn above t ie catch plate and through the slot in the standard. 'each other. y 'The' tapering shape', of" the ,standard r13 enables the pointed endto enter 2. In a window lock, a body member at- ',tached to one sash, a standard having a vertical taper extending upwardly froni said body and havinga transverse slot, a eateh plate attached to the other sash and having a' slot through which the standard passes when thewindow is locked, a latch bar pivoted 'to the body and adapted to swing to and'from the catch plate and having a. head with an'abru t shoulder to lock upon the catch plate said head having an oblique face lon the side next to the catch plate, and a spring to 'press the latch bar normally to ward the standard and a locking bar pivoted Ito the latch-bar and passing above the catch plate and through the slot in the standard.

8. In a window lock, a body member attached tov one sash, a vertically tapering 'standard extendin upwardly from said ,body said standard avin a transverse slot,

a catch plate attached to t e other sash havin a slot through which the standard passes w en the window'is locked, a latch bar pivoted to the body and adapted to swing into locking en gement with the catch plate and n pivoted to the latch bar and passing throng the slot in the standard and terminatin with a hook to engage the opposite side o the standard'from the latch bar. 4. In a window lock, a hollow body member attached to'one sash,an upwardly extending tapering l.standard on said body, said standard having Ia transverse slot, a catch ,plate attached .to the other sash and having a slot through which the standard asses when the windowislocked,alatch bar pivoted with- 1 30 [fifi in the hollow bod said bar having a head with nn-abru t s oulder to rest upon and lock the cato "plate said head having an oblique side next to the catch late and said latch bar havin a transverse s ot, a lock bar passing throng -the slot in the latch bar and pivoted in said slot said lock bar also passing through the slot in the standard and terminating with an u ward hook at that end and with a finger p ate at itsother end, and a spring within the hollow body to normally ress the latch bar into locking position with the catch Elate said spring extendin into contact wit the lock bar.

n witness whereof, I have hereunto set my hand and seal at San Diego, California, this 18l day of June A. D. one thousand nine hundred and thirteen.

NEWTON RUSK.- [11. s.] Witnesses:

E. L. RICHARDS, G. H. Annoa'r.

Copies o! this patent may be obtained for ive eents eeen, by addressing the commissioner ot Patents,

, Wsslngtenm. 0."

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